Whenever anyone takes up the sports of scuba diving it appears clear the there’s a great amount that equipment. Every little thing from masks to fins looks prefer it might include up to a same amount of weight to carry.

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Take a look at at any kind of diver and also it’s basic to recognize there is a require for a many equipment, with both primary and also redundant systems.

It’s no unreasonable to ask just how much this all weighs, however it’s clear that the heaviest component of the kit will certainly be the tank.

The concern is, just how heavy? The tank is the big metal tank provided to bring the compressed air, but how lot does a scuba tank weigh?

A usual scuba tank is 12 liters in volume and also 230 bar pressure and unfilled will certainly weigh approximately 16kg (35 lbs). The determinants affecting weight space material, tank size, and also pressure. A to fill tank v compressed air and also a valve will include around 3.5kgs.

A tank is quickly the heaviest little bit of kit regardless of whether it’s filled or not, v a full set of scuba gear weighing about 22 kgs.

Even despite it’s a most weight, the land weight and also in the water, v buoyancy, girlfriend should successfully be weightless.


There are a couple of scuba tank manufacturers that make precision tanks in different materials, capacities, and also pressures. Steel and Aluminium are the most common materials with options typically roughly 230 bar come 300 bar for the stole tanks.

Sizes can range somewhat, as have the right to the miscellaneous colors and aesthetics, yet a 12L tank would certainly be a traditional size, or sometimes 80 cubic feet, i m sorry is 11.1L.

Below friend will uncover a to compare table that manufacturers through their matching weights.

ModelVolumePressureMaterialWeight (kg)
DirZone12L230 BarSteel13.8
Faber12L232 BarSteel13.6
Beaver12L232 BarSteel16.0
Beaver12L300 BarSteel16.0
Faber15L232 BarSteel18.0
ScubaPro12L232 BarSteel15.1
BTS12L300 BarSteel18.0
Luxfer11.1207 BarAluminium16.0
MES11.1207 BarAluminium14.3

Anywhere between 14kg to 18kg is around right for a tank when scuba diving.

Does A Scuba Tank Weigh an ext Full?

Yes, all other things being same a tank complete of compressed air will certainly weigh slightly heavier than an north tank.

You could not be surprised to find out that it is fairly calculable together well. That’s the nice thing about this scientific research malarky.

There are some well known scientific formulae because that calculating the gas weight, however for every situations, you might find yourself in;

Gas weight of air (in kg) = 0.0012 x push in bar x volume in liters

With these formulae, you have the right to calculate just how much over the base load you will be transporting if the tank is filled.

Such that

12 liter tank in ~ 232 bar is 0.0012 x 232 x 12 = 3.34kg the air12 liter tank in ~ 300 bar is 0.0012 x 300 x 12 = 4.32kg that air11.1 liter tank at 207 bar is 0.0012 x 207 x 11.1 = 2.75kg that air

Thus if you add the empty weight of the tank, the load of the calculated air, and the addition of the tank valve you will be quite close to the weight of the tank.

Generally speaking, a full 12L tank v 232 bar will certainly weigh around 20 kilograms.


Factors That effect Weight that A Scuba Tank

Several factors go into the complete weight that a scuba tank.

In no details order castle are;

Full or empty – as we have actually just learned, placing compressed waiting in the tank will certainly typically include around 3.5kg to the weight of a tank. Together compressed waiting is provided the load of the tank will certainly lighten up until it get its north weight.

Tank material – Tanks will either it is in made from steel or aluminum. Stole is both stronger and more ductile, if both room extrudable. Thus for a given tank size and pressure, much less steel is required for containing the compressed gas.

Steel tanks will certainly be lighter than aluminum tanks for this reason. For a comparable 12L tank, one aluminum tank can be a few kilograms heavier.

Tank size – Nothing as well shocking around this one, yet the enlarge the tank, the more heavier it will be.

Pressure rating – Tanks are rated for pressure, most commonly in bar or psi. A greater pressure rating method air at greater pressures have the right to be stored. Much more air in the tank way a heavier tank. A 12L tank in ~ 230 bar will be approximately 1kg lighter 보다 a comparable tank in ~ 300 bar.

Valve – often weights don’t include the tank valve, but these might be approximately 0.5kg or for this reason in weight


Final thoughts – Parting Waves

There’s no doubt the of all the equipment a scuba diver tote the tank is the heaviest bit of kit. They’re fairly safe as soon as handled properly, and also are frequently put ~ above only when entry come the water is imminent.

While heavy on land, in the water a diver will basically be weightless. So even if it is a diver uses a 300 bar 15L stole tank or a 12L 230 bar steel tank, the weightlessness in the water will certainly be identical.

The weight of the tank is only necessary with respect to traveling and also water entry.

While it have the right to seem prefer a many to bring about, the much more accustomed you come to be to scuba diving the much more you will get used come it. Weightlessness and also weights to accomplish buoyancy notwithstanding.

Weight is just an issue over the surface, for below the target is to achieve neutral buoyancy.

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The reality is the weight because that a scuba tank isn’t yes, really an worry for most scuba divers, together bearing the brunt of it doesn’t take place for long, and won’t impact most peoples scuba enjoyment.